Treadle mechanism for sewing-machines



(No Model.) 2 S h e e t s S h v e e t 1.

P. DIEHL. HANISM FOR SEWING MACHINES.

No. 464,277. I Patented Dec. 1, 18 91.

P. DIEHL. TREADLE MECHANISM FOR SEWING MACHINES.

No. 464,277. Patented Dec. 1,1891.

(No Model.) '2 SheetsSheet 2,

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1 UNITED STATES PATENT OFFICE.

PHILIP DlEl-IL, OF ELIZABETELNEW JERSEY, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY OF NEW JERSEY.

TREADLE MECHANISM FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 464,277, dated December 1, 1891. Application filed August 4, 1891. serial No. 401,635. (No model.)

To all whom it may concern.-

- Be it known that I, PHILIP DIEHL, a citizen of the United States, residing at Elizabeth, in

the county of Union and State of New Jersey, have invented certain new and useful Improvements in Treadle Mechanism for Sewing-Machines, of which the following is a specification, .reference being had therein to the accompanying drawings.

My invention has for its object to provide an improved treadle mechanism for sewingmachines, by which the operator is enabled to drive a machine at high speed with a minimum expenditure of power. To this-end I provide a stand with a cross-brace of suitable construction to afford bearings for the drivingshaft and for arotary pedal-shaft, which latter is provided with two cranks arranged at one hundred and eighty degrees apart and provided with suitable pedals. The pedalshaft and the driving-wheel shaft are each provided with two cranks, preferably arranged ninety degrees apart and connected by suitable pitmen. The pedal-shaft, being provided with twin cranks and pedals, affords an easier driving movement than the rocking or vibrating pedals heretofore generallyin use, while the twin quartering-cranks, through which and the pitmen the movements of the pedal-shaft are transmitted to the drivingwheel shaft, avoid any difficulties which might otherwise arise from dead-centers.

In the accompanying drawings, Figure 1 is a perspective view of asewing-machine stand embodying my invention. Fig. 2 is a front side view of the same. Figs. 3 and 4 are detail'views to illustrate the arrangements of the cranks on the driving and pedal shafts.

ing connected to the side frames by suitable.

bolts.

E denotes thev driving fly-wheel carried by the shaft e, preferably formed with conical ends journaled in the cross-bar (Z and an ad-' justable socket-screw f, attached to the upright d, the said shaft e being provided with quartering twin cranks 6, one of which is preferably at right angles to or ninety degrees from the other.

Journaled in the lower portions of the uprights (1' and d is a pedal-shaft G, provided with oppositely-arranged twin cranks g, carrying suitable pedals h, the said shaft having at its right-hand end outside of the upright (1 the quartering-cranks g, connected by pitmen t'with the quartering-cranks e of the driving-shaft 6. It will be obvious that the pedal-shaft, with its twin cranks and pedals, may be rapidly rotated with an easy movement, and that the power applied thereto will be positively transmitted to the driving-shaft through the quartering twin cranks on the pedal and driving shaft and their connecting pitmen.

Having thus described my invention, I claim and desire to secure by Letters Patent- 1. A sewing-machine stand consisting of side frames and a brace connecting the same, the said brace being composed of upper and lower cross-bars, two outer uprights, and an intermediate upright, combined with a driving crank-shaft and a rotating crank pedalshaft, both ofwhich are suitably journaled in said brace, and a suitable connection between said shafts. v 4

2. Atreadle mechanism for sewing-machines, consisting of the combination, with a sewingmachine stand, of a rotating pedalshaft provided with twin driving cranks and pedals and with twin transmitting-cranks, a driving-shaft, also provided with twin cranks, and twin pitmen connecting the transmittingcranks of the pedal-shaft with the cranks of the driving-shaft.

3. A sewingmachine-treadle mechanism consisting of the combination, witha sewingmachine stand, of a rotating pedalshaft mounted in the lower part thereof and provided with oppositely-arranged twin driving cranks and pedals and with quartering transmitting-cranks, a driving-shaft mounted in said stand above the pedal-shaft and also provided with quartering twin cranks, and pitmen connecting the said quartering-cranks of the pedal and driving shafts.

4 The combination, with the side frames 1o tering transmitting-cranks g, and the twin 1 pitmen 1', connecting the said transmittingcranks g with the said cranks e" of the driving-shaft e.

In testimony whereof I affix my signature in presence of two Witnesses.

PHILIP DIEHL.

\Vitnesses:

J. G. GREENE, JOHN T. EARL. 

